/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Finds the first compiler-relevant (i.e. non-ignorable) node from the given pin.
The given pin's owning node if compiler-relevant, or the first node linked to the owning node at the matching "pass-through" pin that is compiler-relevant. May be NULL if no compiler-relevant nodes can be found from the given pin.
static [UK2Node](API\Editor\BlueprintGraph\UK2Node) * FindFirstCompilerRelevantNode ( [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * FromPin )